Download a PDF containing all abstracts from the conference.

K.1-1: Standardizing hybrid identification: Developing a genetically-vetted field key to distinguish between Mexican ducks, mallards, and their hybrids.

Presented by Flor Hernandez - Email: fbhernandez2@miners.utep.edu

Hybridization rates between the Mexican duck (Anas platyrhynchos diazi) and mallards (A. platyrhynchos) were previously based on plumage characteristics only. However, traits among Mallard-like ducks that appear to be indicative of a hybrid may, in f...
Session: Mallards & Brown Ducks 2 (Friday, August 30, 15:30 to 16:50)

K.1-2: Mallards (Anas platyrhynchos) Regulate Stress Responsiveness According to Energetic Demands During the Fall and Winter

Presented by Jerad Henson - Email: jhenson2@cbu.edu

Many bird species exhibit a seasonally variable glucocorticoid response to a standardized capture and handling protocol. Corticosterone (CORT), the primary avian glucocorticoid, is elevated in response to a wide-range of stressors to facilitate the m...
Session: Mallards & Brown Ducks 2 (Friday, August 30, 15:30 to 16:50)

K.1-3: Are Great Lakes mallards underperforming compared to the remainder of the Mid-continent population?

Presented by Drew Fowler - Email: drew.fowler@wisconsin.gov

Mallards are the most heavily harvested duck species in the Mississippi Flyway (MF), including the Great Lakes states and these birds help support over 2.5 million duck hunter-days in the MF annually. Harvests of mallards originating from breeding ar...
Session: Mallards & Brown Ducks 2 (Friday, August 30, 15:30 to 16:50)

K.1-4: Influence of Agricultural Grains on Diets, Body Condition, and Stress in Black Ducks and Mallards Wintering on Long Island, New York

Presented by Aidan Flores - Email: aflore06@syr.edu

Availability of winter habitat and forage for American black ducks (Anas rubripes; hereon black ducks) can be limiting. Increasing urbanization, sea level rise, and other stressors often make restoration of coastal marshes infeasible or logistically ...
Session: Mallards & Brown Ducks 2 (Friday, August 30, 15:30 to 16:50)

K.2-1: Individuals Versus Environments: Intrinsic and Extrinsic Influences on Waterfowl Reproductive Success

Presented by David Johns - Email: david.johns@usask.ca

Drivers of variation in waterfowl reproductive success can broadly be grouped as restraints by an individual (i.e., breeding decision), constraints imposed from within individuals (i.e., intrinsic quality/condition) or from the surrounding environmen...
Session: Energetics & Productivity (Friday, August 30, 15:30 to 16:50)

K.2-2: Energetic Carrying Capacity of Submersed Aquatic Vegetation in Semi-permanent Wetlands Important to Waterfowl in the Upper Midwest

Presented by Joseph D. Lancaster - Email: lancastj@illinois.edu

Intensification of land use practices and climate change has resulted in extensive wetland loss and declines of native submersed aquatic vegetation (SAV) from wetlands across North America. Although SAV is an important diet component of many species...
Session: Energetics & Productivity (Friday, August 30, 15:30 to 16:50)

K.2-3: True Metabolizable Energy of Submersed Aquatic Vegetation for Ducks

Presented by Margaret Gross - Email: margaret.gross@state.mn.us

Improving the accuracy of energetic models used to set and evaluate habitat objectives to meet dietary needs of waterfowl requires true metabolizable energy (TME) estimates for numerous diet items. While significant effort has been devoted to estimat...
Session: Energetics & Productivity (Friday, August 30, 15:30 to 16:50)

K.2-4: Influence of vegetation richness on dabbling duck nesting productivity

Presented by Mike Eichholz - Email: eichholz@siu.edu

A common restoration practice aimed at waterfowl production involves the establishment of low-diversity (3 5 species) Dense Nesting Cover (DNC) areas seeded with a mixture of introduced grasses and forbs. While DNC provides secure duck nesting habit...
Session: Energetics & Productivity (Friday, August 30, 15:30 to 16:50)

K.3-1: Quantifying the influence of weather conditions on behavioral contributions to reproductive attempts in birds of contrasting migration strategy

Presented by Mitch D. Weegman - Email: weegmanm@missouri.edu

Migratory birds often face substantial risk as they travel between breeding and wintering areas annually. Spring migration is particularly risky because individuals must store energy for migration and reproduction. Hence, individuals attempt to time ...
Session: Behavior & Physiology (Friday, August 30, 15:30 to 16:50)

K.3-2: Behavioral Responses of Common Eiders to Drones Surveys

Presented by Susan Ellis-Felege - Email: susan.felege@email.und.edu

Drones are relatively new technologies gaining popularity among wildlife biologists. As with any new tool in wildlife science, operating protocols must be developed through rigorous impact testing to avoid potential biases. Some studies have quantifi...
Session: Behavior & Physiology (Friday, August 30, 15:30 to 16:50)

K.3-3: Lake Michigan Long-tailed Ducks: Migration Patterns and Habitat Use

Presented by Luke Fara - Email: lfara@usgs.gov

Previous studies suggest that long-tailed duck (LTDU; Clangula hyemalis) populations are in decline and further efforts have been made to better understand their population distributions. Long-tailed ducks rank high in priority with the Sea Duck Joi...
Session: Behavior & Physiology (Friday, August 30, 15:30 to 16:50)

K.3-4: Time at High Altitude Dictates Evolutionary Response to Hypoxia

Presented by Kevin G. McCracken - Email: kevin.g.mccracken@gmail.com

High-altitude species generally have evolved greatly increased capacities in the O2-transport cascade for ventilation, pulmonary diffusion, circulation and tissue diffusion, mitochondrial function, and metabolism. However, the extent of interspecific...
Session: Behavior & Physiology (Friday, August 30, 15:30 to 16:50)

K.4-1: Does proximity to roads affect pair density of canvasbacks and redheads?

Presented by Michael G. Anderson - Email: m_anderson@ducks.ca

Many waterfowl surveys in the prairie pothole region were established along grid roads, generally spaced a mile apart, where indicated pairs were counted for some set distance on either side of the roadway. Often this comprised a strip 0.25 miles wid...
Session: Breeding Ecology (Friday, August 30, 15:30 to 16:50)

K.4-2: Relating predator community composition and duck nest survival in eastern South Dakota

Presented by Samantha Fino - Email: samantha.fino@sdstate.edu

Depredation is a major cause of nest failure. Understanding the predator community composition and predator movements, influenced by patch dynamics, is critical to explain predator-prey interactions, spatiotemporal habitat use, and foraging of nest p...
Session: Breeding Ecology (Friday, August 30, 15:30 to 16:50)

K.4-3: Nesting ecology of American black ducks in coastal North Carolina

Presented by Daniel M. Lawson - Email: dlawso@udel.edu

North Carolina represents the southern extent of the American black ducks (Anas rubripes) breeding range; however, their breeding ecology in this region is not fully understood. We located and monitored 140 nesting black ducks over two years (2017-1...
Session: Breeding Ecology (Friday, August 30, 15:30 to 16:50)

K.4-4: Inter-specific plasticity in timing of breeding among northern hemisphere female ducks

Presented by Robert Clark - Email: bob.clark@canada.ca

Relative timing and flexibility for breeding dates may influence a species population vulnerability to climate change via potential phenological mismatch with their environments. Despite high interest in climate-individual-population interactions, t...
Session: Breeding Ecology (Friday, August 30, 15:30 to 16:50)

P.1-01: Impacts of oil and gas development on duck brood abundance

Presented by Kaylan Kemink - Email: kkemink@ducks.org

The extraction of oil and natural gas from reserves in the Bakken Formation has increased dramatically from 2004 to 2017 in North Dakota and northeast Montana, USA. High development areas overlap substantially with wetland and grassland habitat ident...
Session: Poster Session 1 (Tuesday, August 27, 19:00 to 21:00)

P.1-02: Effects of unconventional oil and gas development on duck nesting ecology

Presented by Kevin M. Ringelman - Email: kringelman@agcenter.lsu.edu

Over the past decade, the United States has seen a boom in petroleum extraction from unconventional sources, particularly the Bakken shale formation in northwestern North Dakota. The Bakken overlaps with the Prairie Pothole Region, the most critical...
Session: Poster Session 1 (Tuesday, August 27, 19:00 to 21:00)

P.1-03: Black-bellied Whistling Duck Site Fidelity and Nest Box Use at the Northern Edge of Their Expanding Range

Presented by Starla Phelps - Email: sphelps1@cbu.edu

Black-bellied Whistling Ducks (BBWD) (Dendrocygna autumnalis) historic North American range lies along the gulf coast. They are traditionally non-migratory but have expanded their breeding range north to take advantage of new resources and nest sites...
Session: Poster Session 1 (Tuesday, August 27, 19:00 to 21:00)

P.1-04: Breeding waterfowl productivity in a flood-irrigated agricultural system

Presented by Casey M. Setash - Email: csetash@rams.colostate.edu

Similar to agricultural production, the sustainable management of waterfowl populations across the western United States inherently depends on informed water management. Both endeavors are increasingly challenged by human demands for water, drought, ...
Session: Poster Session 1 (Tuesday, August 27, 19:00 to 21:00)

P.1-05: Comparison of brood composition and characteristics between the Coteau and glaciated plains of the Dakotas

Presented by David A. Brandt - Email: dbrandt@usgs.gov

The Prairie Pothole Region of the Dakotas is arguably the most important area for waterfowl production in the U.S. and includes two general physiographic regions that vary greatly in wetland and landscape characteristics. The Glaciated Plains locate...
Session: Poster Session 1 (Tuesday, August 27, 19:00 to 21:00)